[SOLVED] SortedExampleSet Reader

zis

Hi,

do you know the best way, how to read sorted data from SortedExampleSet?

I have an implementation for ExampleSet through DataRowReader:

DataRowReader dataRowReader = exampleTable.getDataRowReader();

while( dataRowReader.hasNext() )
{ 
  DataRow dr = dataRowReader.next();
  dr.get( attribute );
   ...
}

But SortedExampleSet has ExampleSet and his mapping indicies. Indicies and Iterator in while cycle is not good way to solve (conditions if counter = 33 then ...).

I found SortedExampleReader, but he not inherits from DataRowReader and I dont know how to use it.

Thanks for ideas
Regards,
John

zis

Ok,

I found solution. Best way is used to more abstraction:

Iterator dataRowReader;
       
if(exampleSet instanceof SortedExampleSet)            
   dataRowReader = new SortedExampleReader( exampleSet );
else
   dataRowReader = exampleSet.getExampleTable.getDataRowReader();

Then in while:

while( dataRowReader.hasNext() )
{
DataRow dr;
            
if(exampleSet instanceof SortedExampleSet)
   dr = ((Example)dataRowReader.next()).getDataRow();
else
   dr = (DataRow)dataRowReader.next();

   ...
}

And code logic is stay same...